Comprehensive Project Management Web App

I'm seeking a skilled web developer to create a robust Project Management web application. The application should have collaborative features and cater to various user roles: Admin, Project Manager, and Team Member.

Key Requirements:
- The app should support Desktop, Mobile, and Tablet platforms.
- It should have functionalities for Task Management, Team Collaboration, and Resource Allocation.
- The design should be user-friendly and intuitive, facilitating seamless collaboration and project tracking.

Ideal Skills and Experience:
- Proven experience in developing web applications, particularly in project management tools.
- Proficiency in responsive design to cater for multiple platforms.
- Strong understanding of user role management in web applications.
- Excellent UI/UX design skills.